Perry has released a trailer for her military-themed “Part of Me” video. In the newly released 25-second clip, Perry sports fatigues and a boyish, closely-cropped haircut. In quickly intercut flashes, the video shows Perry walking with her regiment and fighting one of her fellow soldiers in a mud pit. The segment is set to the the sounds of marching feet, helicopter chops, and machine gun fire.

The trailer ends with a stark shot of Perry, her face painted with camouflage and a military helmet on her head, in a “G.I. Jane” moment.

When Perry debuted “Part of Me” at the Grammys, it was largely interpreted as a revenge song against estranged husband Russell Brand, who filed for divorce on Dec. 30. However, Perry has held that the song was not written about Brand at all.

“I wrote it two years ago, which is funny because everybody is like ‘God, it sounds so current,'” she told MTV News. “Some people that I work with were like, ‘You should just say you wrote it a couple of weeks ago.’ I’m like ‘I’m not a [bleep], I’m going to tell the truth.’ I wrote it two years ago when I was writing and recording ‘Teenage Dream,’ [but] it didn’t feel right on the record … Sometimes I’m like, ‘Am I living in ‘The Truman Show?’ Because I sit down and I write all these songs at once, all these emotions and feelings and thoughts, and then it just feels like sometimes I’m caught in this movie where my life is paralleling my music.”

As Page Six revealed, Perry did change several lyrics in the song from a demo recorded two years ago. An earlier version leaked online included the lyrics “You can keep the dog/I never liked him anyway.” But in the new version, the words have been changed to, “You can keep the diamond ring/it don’t mean nothing anyway.”